CosyCool 3 Piece Duvet System (King Size)

Rated 5.00 out of 5 based on 2 customer ratings
(2 customer reviews)


The most versatile duvet system on the market today. By attaching and detaching the demi-duvets to the main duvet as needed through the changing seasons, you and your partner can snuggle up under the following tog combinations:

  • 4.5 tog and 9 tog
  • 4.5 tog and 13.5 tog
  • 4.5 tog and 18 tog
  • 9 tog both sides
  • 9 tog and 13.5 tog
  • 9 tog and 18 tog
  • 13.5 tog both sides

With a luxurious, quality finish, scroll below to see a full description of our duvet…



  • Made in the UK
  • Includes 225cm x 220cm King Size duvet (4.5 tog one side, 9 tog the other), plus…
  • 112.5cm x 220cm demi-duvet (4.5 tog), plus…
  • 112.5cm x 220cm demi-duvet (9 tog)
  • Microfibre (siliconised polyester ball) filling
  • Feel and handle like down
  • Non-allergenic and odourless
  • Machine washable at 40°C
  • 230 thread count 100% cotton case
  • Piped and double-stitched edging
  • Individually filled pockets with baffle wall box construction
  • Oeko-Tex standard 100 certified case & filling
  • 14 Day, 100% money back guarantee if you are not fully satisfied

2 reviews for CosyCool 3 Piece Duvet System (King Size)

  1. Rated 5 out of 5


    Super-pleased with this duvet. When my wife told me she was buying this, I genuinely thought it was a gimmick and possible waste of money. I then realised I’d been sleeping better for the past couple of weeks when the old duvet (which to me was fine) had been replaced without telling me. This was in autumn so the duvet was on a ‘medium’ setting – it’s not just the weight but it just feels very comfortable and insultating anyway. Come winter and the addition (for me) of a few more togs, and it truly came into its own, keeping me snug whilst my wife still preferred the autumn weight on her side. A well-made, well-thought out product – money well spent.

    • CosyCool

      Thank you for your review – we’re so pleased to hear that you’re impressed with your duvet!

  2. Rated 5 out of 5


    Very impressed with how well this works! The duvet, without the extra tog added, has been perfect for myself and my partner throughout the year. On cold evenings we add the extra duvets (easy to do and they stay put!) which adds a really good weight without us getting too hot and no extra blankets required! We’d looked at other dual tog duvets but none others allow you to add extra weight. The perfect solution for us!

    • CosyCool

      Thank you so much for your review! We’re delighted to hear that you’re happy with your new duvet.

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